Home / 21,588.36-32,386.48-8,439.88

Finding the Fourth Proportional to 21,588.36, 32,386.48 and 8,439.88

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Solution

The fourth proportional to 21,588.36, 32,386.48 and 8,439.88 is: 12,661.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,588.36 : 32,386.48 = 8,439.88 : x
  2. Step 2: Convert to fraction form
    21,588.36/32,386.48 = 8,439.88/x
  3. Step 3: Cross multiply
    21,588.36x = 32,386.48 × 8,439.88
  4. Step 4: Simplify right side
    21,588.36x = 273,338,004.82
  5. Step 5: Solve for x
    x = 273,338,004.82/21,588.36
  6. Step 6: Final answer
    x = 12,661.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.